FOMTOR Tubeless Presta Valve Stem, Aluminum Alloy Stems with Value Core Remover Tool and Stem Caps Fit Most Bicycle Rims (Black, 40MM, Pair)

Product design:40mm Tubeless Presta Valve Stem (2 Pack),Two spare covers. 2 color options of black and red, allowing you to mix and match according to your preferences. High-quality materials：Made of lightweight CNC anodized aluminum. Lightweight, Anti-corrosion, Anti-rust and Solid. Removable Valve Core: The valve core is a removable cover, an integrated valve core-removable cover and two other covers as spare parts makes adding sealant easy. Superior Seal: With a removable valve cover, O-ring, and lock nut. The large soft rubber base can easily form an airtight seal on the valve hole with a diameter of not more than 8MM, ensuring that the nut can be tightened and protecting the rim. Widely used: Compatible for most of wheel models and tubeless bike rims, including both road and mountain bikes.They are quick to set upprovide you with a good seal,often replace sealant or rim, you can quickly return to the trails faster.